For package: 2.1.0-0xneon+22.04+jammy+release+build8 libzxing2 should have been SONAME version bumped into libzxing3, debian upstream introduced a new package for this version: https://tracker.debian.org/news/1472895/accepted-zxing-cpp-210-1-source-amd64-all-into-experimental/ This will cause package conflicts
libzxing3 is already a thing in Ubuntu upstream as well with the 2.x versioning https://packages.ubuntu.com/noble/libzxing3
fixed by https://invent.kde.org/neon/backports-jammy/zxing-cpp-jammy/-/commit/dfa83b5364444cd82befcfbc737b90ff1f17bad7 and https://invent.kde.org/neon/backports-jammy/zxing-cpp-jammy/-/commit/b1e2f5daf56256e9f02943ce587c16f97539a835